Production of a Platinum-Free Chelate Catalyst Material as an Intermediate Product, and Further Processing Thereof to Obtain an Electrocatalytic Coating as a Final Product

a technology of chelate catalyst and platinum-free chelate, which is applied in the direction of physical/chemical process catalyst, cell components, sustainable manufacturing/processing, etc., can solve the problems of unsatisfactory catalytic performance characteristics, disadvantageous surface quality of materials, and cathode poisoning, etc., to improve the catalytic capacity, simple, efficient, cost-effective
US20080286490A1Inactive Publication Date: 2008-11-20HELMHOLTZ ZENT BERLIN FUER MATERIALIEN & ENERGIE GMBH
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
HELMHOLTZ ZENT BERLIN FUER MATERIALIEN & ENERGIE GMBH
Publication Date
2008-11-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for preparing a platinum-free chelate catalyst material as an intermediate product for selective electrocatalytic reduction of oxygen includes performing a low-temperature plasma treatment on a powdery form of the transition-metal chelate in a plasma reactor chamber having an inert plasma gas disposed therein. A plasma power, a plasma gas pressure, a plasma initialization and a treatment time of the low-temperature plasma treatment are selected so that molecules of the transition metal chelate are fragmented in the plasma and cross-link in a subsequent chemical reaction so as to form a carbon matrix and retain a basic chelate structure in a surrounding of the transition metal.
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Description

CROSS REFERENCE TO PRIOR APPLICATION

[0001] This is a U.S. National Phase application under 35 U.S.C. §371 of International Application No. PCT / DE2006 / 000326, filed Feb. 20, 2006 and claims the benefit of German Patent Application No. 10 2005 008 338.2, filed on Feb. 20, 2005. The International Application was published in German on Aug. 24, 2006 as WO 2006 / 086979 under PCT Article 21 (2).FIELD OF THE INVENTION

[0002] The present invention relates to a method for preparing a platinum-free chelate catalyst material as an intermediate product for the selective electrocatalytic reduction of oxygen, having a porous, conductive carbon matrix containing embedded, electrochemically active centers of a transition-metal chelate, and to a method for further processing the intermediate product to obtain an electrocatalytic coating as a final product on a substrate, as well as to an application of the final product.BACKGROUND

[0003] Platinum-free chelate catalyst material for the electrocatalytic red...

Claims

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